Sirdar No. 1 Aran Stonewashed is a machine-washable and dryable blend of acrylic and nylon with a fantastic stonewash effect and a subtle sheen. This heavy worsted weight yarn works up quickly and is great for easy-care projects that will be washed frequently, like baby blankets and toddler sweaters. Fiber Content: 50% Acrylic/50% Nylon; Weight: Worsted; Gauge: 4.5 sts = 1" on US 8; Weight/Yardage: 100g/197yds; Care: Machine Wash Cold and Tumble Dry